DEF_HELPER_2(sysret, void, env, int)
#endif
DEF_HELPER_FLAGS_2(pause, TCG_CALL_NO_WG, noreturn, env, int)
-DEF_HELPER_1(reset_rf, void, env)
DEF_HELPER_FLAGS_3(raise_interrupt, TCG_CALL_NO_WG, noreturn, env, int, int)
DEF_HELPER_FLAGS_2(raise_exception, TCG_CALL_NO_WG, noreturn, env, int)
-DEF_HELPER_1(cli, void, env)
-DEF_HELPER_1(sti, void, env)
-DEF_HELPER_1(clac, void, env)
-DEF_HELPER_1(stac, void, env)
DEF_HELPER_3(boundw, void, env, tl, int)
DEF_HELPER_3(boundl, void, env, tl, int)
env->cr[0] &= ~CR0_TS_MASK;
env->hflags &= ~HF_TS_MASK;
}
-
-void helper_reset_rf(CPUX86State *env)
-{
- env->eflags &= ~RF_MASK;
-}
-
-void helper_cli(CPUX86State *env)
-{
- env->eflags &= ~IF_MASK;
-}
-
-void helper_sti(CPUX86State *env)
-{
- env->eflags |= IF_MASK;
-}
-
-void helper_clac(CPUX86State *env)
-{
- env->eflags &= ~AC_MASK;
-}
-
-void helper_stac(CPUX86State *env)
-{
- env->eflags |= AC_MASK;
-}
-
-#if 0
-/* vm86plus instructions */
-void helper_cli_vm(CPUX86State *env)
-{
- env->eflags &= ~VIF_MASK;
-}
-
-void helper_sti_vm(CPUX86State *env)
-{
- env->eflags |= VIF_MASK;
- if (env->eflags & VIP_MASK) {
- raise_exception_ra(env, EXCP0D_GPF, GETPC());
- }
-}
-#endif
}
}
+static void gen_set_eflags(DisasContext *s, target_ulong mask)
+{
+ TCGv t = tcg_temp_new();
+
+ tcg_gen_ld_tl(t, cpu_env, offsetof(CPUX86State, eflags));
+ tcg_gen_ori_tl(t, t, mask);
+ tcg_gen_st_tl(t, cpu_env, offsetof(CPUX86State, eflags));
+ tcg_temp_free(t);
+}
+
+static void gen_reset_eflags(DisasContext *s, target_ulong mask)
+{
+ TCGv t = tcg_temp_new();
+
+ tcg_gen_ld_tl(t, cpu_env, offsetof(CPUX86State, eflags));
+ tcg_gen_andi_tl(t, t, ~mask);
+ tcg_gen_st_tl(t, cpu_env, offsetof(CPUX86State, eflags));
+ tcg_temp_free(t);
+}
+
/* Clear BND registers during legacy branches. */
static void gen_bnd_jmp(DisasContext *s)
{
}
if (s->base.tb->flags & HF_RF_MASK) {
- gen_helper_reset_rf(cpu_env);
+ gen_reset_eflags(s, RF_MASK);
}
if (recheck_tf) {
gen_helper_rechecking_single_step(cpu_env);
#endif
case 0xfa: /* cli */
if (check_iopl(s)) {
- gen_helper_cli(cpu_env);
+ gen_reset_eflags(s, IF_MASK);
}
break;
case 0xfb: /* sti */
if (check_iopl(s)) {
- gen_helper_sti(cpu_env);
+ gen_set_eflags(s, IF_MASK);
/* interruptions are enabled only the first insn after sti */
gen_update_eip_next(s);
gen_eob_inhibit_irq(s, true);
|| CPL(s) != 0) {
goto illegal_op;
}
- gen_helper_clac(cpu_env);
+ gen_reset_eflags(s, AC_MASK);
s->base.is_jmp = DISAS_EOB_NEXT;
break;
|| CPL(s) != 0) {
goto illegal_op;
}
- gen_helper_stac(cpu_env);
+ gen_set_eflags(s, AC_MASK);
s->base.is_jmp = DISAS_EOB_NEXT;
break;